Write headings, paragraphs, links and lists as Markdown. Add chart steps with MDX components, and keep the VisDelta setup in chart.js. The weather story uses named Step views, shared Value fields and declarative controls.

Hero and Chapter frame the story. Scrolly groups steps; each Step pairs text with a complete chart state.

<Scrolly layout="right" playback="step" chartStyle="paper"> plays when a step enters the reading area. Use playback="scrub" for scroll seeking. Layouts can be left, right or overlay. Steps accept id and title for navigation.

Save project keeps MDX, code and data together. Export MDX saves the current source; its local imports still need their companion files.